vfs: fix archive file add routine: wasn't starting at mount point,
didn't handle files in archive root dir correctly
tex: add tex_is_known_fmt
lib: add ERR_TIMED_OUT
This was SVN commit r1693.
tex: improve flip / bgr convert (now generalized "transforms"); add
support for transforming image before encoding
wsdl: add SDL_ShowCursor, minimize when tasking out
main: WriteScreenshot improved, fixes flipped screenshots
This was SVN commit r1689.
- complete+document+fix texture orientation code
- add JPG codec
- file extension check bugfix: now case-insensitive
also some general cleanup.
This was SVN commit r1660.